Diluting device for internal-combustion engines



Nov. 2 1926. 1,605,694

E. R. ARMSTRONG DILUTING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Jilly 25, 1924 I gmento'c 1Z1? Arms 2170;? I

v af tozvww Patented Nov. 2, 1926.

UNITED STATES EDWARQ) R. ARMSTRONG, OF HOLLAND, MICHIGAN.

DILUTING DEVICE FOR INTERNAL-COMB'USTION ENGINES.

Application filed July 25, 1924.

This invention relates to an improved diluting device for internal combustion engines and seeks to provide a simple and effective means for introducing moistened air i. into the fuel mixture for increasing the combustibility thereof and accordingly increasing the efficiency of the engine as well as effecting a saving in fuel and minimizing the formation of carbon in the engine cylinders.

The invention further seeks to provide a device wherein the steam escaping from the overflow pipe of the engine radiator will be utilized to moisten the air drawn in through the device.

A further object of the invention, in this connection, is to provide a device wherein the air intake pipe employed will have its intake end disposed opposite and close to the discharge end of the overflow pipe but not directly connected thereto so that steam escaping from the overflow pipe will be aspirated into the intake pipe, while, at the same time, air may also be drawn into the pipe by engine suction.

And the invention still further seeks to provide a device which may be manually controlled and which may be readily installed.

In the accompanying drawings:

Figure 1 is a side elevation showing my improved device in connection with the engine, radiator and associated parts of a conventional motor vehicle, parts being illustrated in section.

Figure 2 is a detail sectional view showing the manner in which the device is connected to the intake manifold of the engine, and

Figure 3 is a detail sectional view on the line 33 of Figure 1, showing the disposition of the open end of the intake pipe with respect to the discharge end of the overflow pipe of the engine radiator.

Referring now more particularly to the drawings, I have, for convenience, shown my improved device in connection with the engine, radiator and associated parts of a conventional motor vehicle. The engine is indicated at 10 and the radiator at 11, the radiator being provided with the usual overflow pipe 12 leading from the filler neck of the radiator downwardly at the rear side of the radiator. Connected to the engine at the adjacent side thereof is the intake manifold 13 to which is attached the carbureter 14:.

Serial No. 728,227.

The instrument board of the vehicle is indicated at 15.

Coming now more particularly to the subbe readily manipulated manually for open-, 2

ing or closing the valve. Detachably connected to the outer end of the valve is an air intake pipe 20 which is arranged to extend forwardly at the adjacent side of the engine and is then offset to extend at the opposite side of the engine and forwardly when the pipe is bent up to form an upstanding portion 21 extending in alinement with the overflow pipe 12 and, as shown in Fig ure 3, terminating close'below the lower open end of the overflow pipe in registering rela tion therewith. As will be observed, the pipe is not connected in any way to the over flow pipe 12 so that, in installing the device, it is unnecessary to molest the overflow pipe or make any internal connection with the radiator whatever. Accordingly the possibility of injuring the radiator or the overflow pipe is avoided while the device may be attached simply by connecting the valve 16 with the engine intake manifold.

As will now be seen, when the engine is running, the valve plug 17 may be turned by means of the rod 18 for opening the valve 16 when air will be drawn in through the pipe 20 into the intake manifold 13 for diluting the fuel mixture flowing through the manifold. If, at the time, no steam or moisture is escaping through the pipe 12 of the radiator 11, the air drawn in will not be humidified but the air so drawn in will, nevertheless, supply oxygen to the fuel mixture additional to the oxygen of the air taken in at" the carburetor 14 for increasing the combustibility of the mixture. However, under normal circumstances, steam and moisture will, after the enginehas been running a short length of time, be discharged through the overflow pipe 12 of the radiator and, as will be seen, as the steam thus issues from the lower end of the overflow pipe, the steam will be drawn into the pipe 20, by engine suction, for moistening the air taken in at lot the open end of the pipe so that, under such conditions, the fuel mixture Will be diluted with steam and moistened air. As is Well known the combustibility of the mixture will thus be greatly increased While the tendency toward the formation of carbon in the engine cylinders will be checked. Furthermore, a considerable saving in fuel is effected. Any approved means may be provided for securing the free end portion of the pipe 20 so that the upstanding terminal 21 of the pipe will be maintained in registration with the lower end of the overflow pipe 12.

Having thus described the invention, What I claim is:

The combination With an internal combustion engine having a fuel mixture inlet, and a radiator having an overflow pipe, of a valve secured in a side of said inlet and projecting laterally therefrom, and apipe connected with said valve and extending forwardly tl erefrom and having its outer end upturned and disposed close to and axially alined with the open end. of the overflow pipe but spaced therefrom and entirely free thereof.

In testimony whereof I aflix my signature.

EDWARD R. ARMSTRONG; 

